In the summer of 2006, my newly graduated colleagues and I came to the United States for training at Microsoft for the first time (we called it MACH Hire). When we walked around the city of Seattle, we felt that everything was new: participating in the underground tour in Pioneer Square, and the streets. We boarded the domineering duck boat (amphibious tour bus) to say hello, and went to the Crab Pot to crack crab legs… On a sunny afternoon, we walked in front of a row of beautiful sports cars, and a female colleague leaned over to pose , asking us to take pictures of her. 　　A black guy…